Obstetric dating scans

Obstetric Dating Ultrasound - Sound Radiology

obstetric dating scans

Scanning your baby gives you an exciting early glimpse of your baby, but it also provides important medical information relating to your baby's growth. For all Obstetrics scans, no special preparation is needed, although it is best to wear loose clothing that can easily be lifted or removed in order to expose your. If you have had bleeding during your pregnancy or you have had previous miscarriages, your doctor or midwife may recommend an early dating scan from 6 to.

Obstetric ultrasonography - Wikipedia

Some abnormalities detected by ultrasound can be addressed by medical treatment in utero or by perinatal care, though indications of other abnormalities can lead to a decision regarding abortion.

Perhaps the most common such test uses a measurement of the nuchal translucency thickness "NT-test", or " Nuchal Scan ".

obstetric dating scans

Ultrasound may also detect fetal organ anomaly. Usually scans for this type of detection are done around 18 to 23 weeks of gestational age called the " anatomy scan ", "anomaly scan," or "level 2 ultrasound". Some resources indicate that there are clear reasons for this and that such scans are also clearly beneficial because ultrasound enables clear clinical advantages for assessing the developing fetus in terms of morphology, bone shape, skeletal features, fetal heart function, volume evaluation, fetal lung maturity, [20] and general fetus well being.

Soft markers are variations from normal anatomy, which are more common in aneuploid fetuses compared to euploid ones. These markers are often not clinically significant and do not cause adverse pregnancy outcomes. Randomized controlled trials have followed children up to ages 8—9, with no significant differences in vision, hearing, school performance, dyslexia, or speech and neurologic development by exposure to ultrasound.

Food and Drug Administration FDA of milliwatts per square cm [24] is well under the levels used in therapeutic ultrasoundbut still higher than the milliwatts per square cm range of the Statison V veterinary LIPUS device.

obstetric dating scans

One randomized controlled trial, however, came to the result of a higher perinatal death rate of normally formed infants born after 24 weeks exposed to Doppler ultrasonography RR 3.

Read on for more information about what a dating scan offers. Dating scans are used to confirm how many weeks pregnant you are and your expected due date.

obstetric dating scans

Why would I have a dating scan? A dating scan might be recommended to confirm your due date if you are unsure of your last menstrual period or your date of conception.

obstetric dating scans

It is usually offered to pregnant women from 10 weeks to 13 weeks gestation, but can be carried out any time from 6 weeks. If you have had bleeding during your pregnancy or you have had previous miscarriagesyour doctor or midwife may recommend an early dating scan from 6 to 10 weeks gestation.

Obstetric ultrasound -- a comprehensive guide to ultrasound scans in pregnancy

If you choose to have a dating scan, it will most probably be your first scan. You will need to get a referral from your doctor or midwife for a dating scan. How is a dating scan performed?

A dating scan is carried out by ultrasound. A sonographer, who is usually a radiographer or a midwife trained in ultrasound, will complete your scan.

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If the scan is after 10 weeks, ultrasound recordings are usually made through your abdomen. The sonographer will put gel on your abdomen and move a hand-held device called a transducer, back and forward over your skin.

In some situations, such as when the scan is completed before 10 weeks of gestation or you are overweight, you may also need a vaginal scan.

obstetric dating scans

Your sonographer will let you know if this is needed.